Toothbrush



FIG. 1 is a top plan view of a toothbrush showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a perspective view thereof;

FIG. 7 is a top plan view of a second embodiment of a toothbrush. 

The ornamental design for a toothbrush, as shown and described. 